netdev - [PATCH net-next] tcp_westwood: fix tcp_westwood

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Date:	Wed, 29 Apr 2015 16:20:58 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	edumazet@...gle.com, netdev@...r.kernel.org, ycheng@...gle.com,
	ncardwell@...gle.com, kbuild test robot <fengguang.wu@...el.com>
Subject: [PATCH net-next] tcp_westwood: fix tcp_westwood_info()

From: Eric Dumazet <edumazet@...gle.com>

I forgot to update tcp_westwood when changing get_info() behavior,
this patch should fix this.

Fixes: 64f40ff5bbdb ("tcp: prepare CC get_info() access from getsockopt()")
Reported-by: kbuild test robot <fengguang.wu@...el.com>
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/ipv4/tcp_westwood.c |   15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/net/ipv4/tcp_westwood.c b/net/ipv4/tcp_westwood.c
index b3c57cceb9907fe9d79f33f33369a96b647b5f26..c10732e39837872c724b801700f627a7fb1c9390 100644
--- a/net/ipv4/tcp_westwood.c
+++ b/net/ipv4/tcp_westwood.c
@@ -256,18 +256,19 @@ static void tcp_westwood_event(struct sock *sk, enum tcp_ca_event event)
 }
 
 /* Extract info for Tcp socket info provided via netlink. */
-static int tcp_westwood_info(struct sock *sk, u32 ext, struct sk_buff *skb)
+static size_t tcp_westwood_info(struct sock *sk, u32 ext, int *attr,
+				union tcp_cc_info *info)
 {
 	const struct westwood *ca = inet_csk_ca(sk);
 
 	if (ext & (1 << (INET_DIAG_VEGASINFO - 1))) {
-		struct tcpvegas_info info = {
-			.tcpv_enabled = 1,
-			.tcpv_rtt = jiffies_to_usecs(ca->rtt),
-			.tcpv_minrtt = jiffies_to_usecs(ca->rtt_min),
-		};
+		info->vegas.tcpv_enabled = 1;
+		info->vegas.tcpv_rttcnt	= 0;
+		info->vegas.tcpv_rtt	= jiffies_to_usecs(ca->rtt),
+		info->vegas.tcpv_minrtt	= jiffies_to_usecs(ca->rtt_min),
 
-		return nla_put(skb, INET_DIAG_VEGASINFO, sizeof(info), &info);
+		*attr = INET_DIAG_VEGASINFO;
+		return sizeof(struct tcpvegas_info);
 	}
 	return 0;
 }


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